<template>
  <div class="my-tab-bar">
  	<div class="tab-item" v-for="(item,index) in list" 
    :key="index"
    :class="{current:index === activeIndex}"
    @click="btn(index,item.componentName)"
    >
      <!-- 图标 -->
      <span class="iconfont" :class="item.iconText"></span>
      <!-- 文字 -->
      <span>{{item.text}}</span>
    </div>
  </div>
</template>

<script>
export default {
   data(){
    return {
      activeIndex:0,
    }
  },
   props:{
     index:Number,
     list:{
       type:Array,
       required:true,
       validator(val){
         if(val.length < 2 || val.length > 5) {
            return false
        } else {
          return true 
        }
      }
    } 
  },
  methods:{
    btn(index,componentName){
      this.activeIndex = index
      this.$emit('changeCom',componentName,index)
    }
  },
}
</script>

<style lang="less" scoped>
.my-tab-bar {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 50px;
  border-top: 1px solid #ccc;
  display: flex;
  justify-content: space-around;
  align-items: center;
  background-color: white;
  .tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}
    
.current {
  color: #1d7bff;
}
</style>